<template>
  <view>
    <view class="search-box">
      <uni-search-bar @input="input" :radius="100" placeholder="请输入搜索宝宝名字" cancelButton="none" v-model="searchValue"></uni-search-bar>
    </view>
    
    <!-- 搜索建议列表 -->
    <view class="sugg-list" v-if="searchResults.length !== 0">
      <view class="sugg-list-item" v-for="(item, i) in searchResults" :key="i" @click="gotoDetail(item.goods_id)">
        <view class="goods-name">{{item.goods_name}}</view>
        <uni-icons type="arrowright" size="30"></uni-icons>
      </view>
    </view>
    
    
    <!-- 搜索历史区域 -->
    <view class="history-box" v-else>
      <!-- 标题区域 -->
      <view class="history-title">
        <text>搜索历史</text>
        <view class="delete" @click="deleteHistory">
          <uni-icons type="trash" size="17"></uni-icons>
        </view>
      </view>
      
      <!-- 列表区域 -->
      <view class="history-list">
        <uni-tag :text="item" v-for="(item, i) in histories" :key="i" @click="gotoGoodsList(item)"/>
      </view>
    </view>
  </view>
</template>

<script>
  export default {
    name: 'mySearch',
    props: {},
    data() {
      return {
        searchValue: '',
        timer: null,
        kw: '',
        // 搜索建议查询
        searchResults: [],
        // 搜索历史的数组
        historyList: []
      }
    },
    computed: {
      histories() {
        return Array.from(new Set([...this.historyList].reverse()))
        // return [...this.historyList].reverse()
      }
    },
    methods: {
      // input 输入事件的处理函数
      input(e) {
        clearTimeout(this.timer)
        this.timer = setTimeout(() => {
          // console.log(e)
          this.kw = e
          this.getSearchList()
          
        }, 500)
      },
      async getSearchList() {
        if(this.kw.length === 0) {
          this.searchResults = []
          return
        }
        const { data: res } = await uni.$http.get('/api/public/v1/goods/qsearch', { query: this.kw })
        if(res.meta.status !== 200) return uni.$showMessage()
        this.searchResults = res.message
        // 保存搜索历史记录
        this.saveSearchHistory()
        // console.log(res.message)
      },
      gotoDetail(goods_id) {
        // console.log(goods_id)
        uni.navigateTo({ url: '/subpkg/goods_detail/goods_detail?goods_id=' + goods_id })
      },
      saveSearchHistory() {
        this.historyList.push(this.kw)
        // const set = new Set(this.historyList)
        // set.delete(this.kw)
        // set.add(this.kw)
        // this.historyList = Array.from(set)
        
        
        uni.setStorageSync('kw',JSON.stringify(this.historyList))
      },
      deleteHistory() {
        this.historyList = []
        uni.setStorageSync('kw', '[]')
        this.searchValue = ''
        
      },
      gotoGoodsList(item) {
        console.log(item)
        uni.navigateTo({ url: '/subpkg/goods_list/goods_list?query=' + item })
      }
      
    },
    onLoad() {
      this.historyList = JSON.parse(uni.getStorageSync('kw') || '[]')
    }
  }
</script>

<style lang="scss">
.search-box {
  position: sticky;
  top: 0;
  left: 0;
  z-index: 999;
}

.sugg-list {
  padding: 0 5px;
  
  .sugg-list-item {
    font-size: 12px;
    padding: 13px 0;
    border-radius: 1px solid #efefef;
    display: flex;
    align-items: center;
    justify-content: space-around;
    
    .goods-name {
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      margin-right: 3px;
    }
  }
}

.history-box {
  padding: 0 5px;
  
  .history-title {
    display: flex;
    justify-content: space-between;
    height: 40px;
    line-height: 40px;
    align-items: cneter;
    font-size: 13px;
    border-bottom: 1px solid #efefef;
  }
  
  .history-list {
    display: flex;
    flex-wrap: wrap;
    
    .uni-tag {
      margin: 5px 5px 0 0;
    }
  }
}
</style>
